Upgrade to 10.4.6 - fail to boot - cannot see disk anymore

G5 20 flat panel with 150 gig hard drive. Running 10.4.5
Downloaded 10.4.6 upgrade and system rebooted. Came up with grey screen, no apple icon. Let it sit for a couple of hours.
Rebooted using install disk. Went into disk utility and my 150 gig drive is no longer there!
Rebooted in single user mode. Attempted to run fsck - nothing.
Rebooted in firewire drive mode. My laptop does not see any hard drive either.
Attempted to perform a re-install - and it does not show any destination drives.
Question: How can I re-establish the presence of the hard drive? Is there a firmware level command set I can use? Terminal commands?
Or am I dead?

When I run re-install, it asks for the drive. Problem is, no drives are shown. It is like I have a bare board with nothing attached.
No matter what I try - disk utility, re-install, single user mode, target mode, DiskWarrior, none of them indicate that there is a drive attached to the motherboard.
Somehow, must re-establish that yes, there really is a hard drive out there.

Similar Messages

Upgrade to UCM 8.5 fails to boot

We're upgrading from 6.1.5 to 8.5 on MCS-7825-H3's. The install to the inactive partition happens without errors but when we switch versions and the server reboots it hangs shortly after the Grub menu. Attached are screen shots of the when the server stops booting. Even the 8.5 recovery disk fails to boot. Using the 6.1.5 recovery disk allows us to switch partitions to get back to a working 6.1.5. I have tried both the version shipped from a PUT order and the latest down load version and both do the same thing. We have a TAC case open but I was wondering if anyone on the forum has run in to this before.
Thanks!

Hello,
I don't know if you got the answer from TAC or not but there is a BUG for upgrading to CUCM 8.5 on MCS 7825 H3 : here is the BUG ID:
CSCtf50672
Amer

MacBook Pro failing to boot up despite disk utility repair and PRAM

Problem: MBP frozen on boot up screen with Apple logo and turning gear (which freezes after a while aswell)
Solutions attempted: disk repair via custom recovery- disk utility, PRAM
Device: MacBook Pro 15" (early 2010) running 10.9
Additional info-
Never had any issue with the device and this seems to have happened all of a sudden. Installed an SSD a few months ago, and just realised the ssd did not have a recovery partition. However I connected my older hardrive via USB to access recovery which seemed to work fine.
NOTE: for the past few weeks, every now and then I was unable to power the device off and whenever this occurred, there seemed to be a few bugs (ie unable to empty thrash-error 50 and enable to increase/decrease volume/screen brightness). However, holding the power button and restarting it seemed to have fixed it.
Had the same issue but this time around MBP failed to boot up.
Any possible suggestions?

Ranban wrote:
Are you suggesting reinstalling the os?
No.
Furthermore, is there a way to keep the data intact using this method? Or retrieve it at the least?
Repairing a disk should have no affect on the data, nor would an OSX installation. However if the data has value, there always should be a backup, preferably two.
In your original post you said "attempted: disk repair via custom recovery- disk utility". The term 'custom recovery' to me is alien and thus confusing.
What I am suggesting is a repair of the HDD using the original installation disk, not an OSX installation.
You insert the disk holding down the C key at startup. Proceed with the process until you see on the top of the display a menu bar. Select UTILITIES and from the drop down menu select Disk Utility. Then select Disk Utility>First Aid and then run Verify and repair. Exit from the installation process.
That way I know that the attempted repair was properly executed. You may have in essence done that, but there is an element of doubt in my mind.
Ciao.

Guest domains fail to boot from SAN disk after power-cycle

Control Domain Environment
# uname -a
SunOS s0007 5.10 Generic_139555-08 sun4v sparc SUNW,T5440
# ./ldm -V
Logical Domain Manager (v 1.1)
Hypervisor control protocol v 1.3
Using Hypervisor MD v 0.1
System PROM:
Hypervisor v. 1.7.0 @(#)Hypervisor 1.7.0 2008/12/11 13:42\015
OpenBoot v. 4.30.0 @(#)OBP 4.30.0 2008/12/11 12:16
After a power-cycle the guest domains did not boot from SAN disks, they
tried to boot from the network.
# ./ldm list
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- SP 16 8G 0.5% 4d 20h 46m
s0500 active -t---- 5000 8 8G 12% 4d 20h 46m
s0501 active -t---- 5001 8 4G 12% 4d 20h 46m
s0502 active -t---- 5002 16 8G 6.2% 4d 20h 46m
s0503 active -t---- 5003 8 2G 12% 4d 20h 46m
s0504 active -t---- 5004 8 4G 0.0% 4d 20h 46m
s0505 active -t---- 5005 4 2G 25% 4d 20h 46m
s0506 active -t---- 5006 4 2G 25% 4d 20h 46m
s0507 active -t---- 5007 4 2G 25% 4d 20h 46m
s0508 active -t---- 5008 4 2G 25% 4d 20h 46m
Connecting to console "s0508" in group "s0508" ....
Press ~? for control options ..
Requesting Internet Address for 0:14:4f:fa:b9:1b
Requesting Internet Address for 0:14:4f:fa:b9:1b
Requesting Internet Address for 0:14:4f:fa:b9:1b
Requesting Internet Address for 0:14:4f:fa:b9:1b
If we reboot the quest domains now, it works.
It seems the disks are not ready at the
time the guest domains boot.
We see this on systems with many guest domains.
Is there any logfile, where we could find the reason for this?
Or is this a known issue?

Press F12 on boot to choose CD/DVD as a temporary boot device.
My hunch is that there's something wrong with the SSD itself, though.
Good luck.
Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

I upgraded to iOS8 on my iphone and now cannot see the thumbnails of my pictures when I try to download onto my computer.

I have an iphone 4 and an HP Pavillion with windows 7. I always have been able to connect my iphone to my laptop and open
the DCIM folder and see the picture icons so I can pick the ones I want to download. After upgrading to iOS8 I cannot see the icons after a
few seconds of connecting the phone to the computer. They all turn into the windows icon.
I do not want to try the icloud for windows control panel unless I can pick the pictures that will be transferred. I don't want all the pictures I take on my computer.

http://support.apple.com/kb/HT1808

Yosemite 10.10.2 failed to install, cannot find it anymore

Hi all,
I should pay more attention next time..
I received an App Store notification that an update to Yosemite was ready. I was tired enough that I did not focus on which version it was, but I assume it was 10.10.2 and that I was on 10.10.1. I just checked the system logs earlier today
Jan 29 02:30:25 Sams-MBA.local ReportCrash[23463]: Date/Time: 2015-01-29 01:30:15.978 +1300
Jan 29 02:30:25 Sams-MBA.local ReportCrash[23463]: OS Version: Mac OS X 10.10.1 (14B25)
So I guess that confirms I am/was on 10.10.1, and received a notification for 10.10.2.
Unfortunately after the reboot I got a notification saying the install failed -- not all of the installation was completed successfully.
It asked if I want to retry or try later. I clicked on later. It asked if I wish to submit the crash logs to Apple, and I accepted.
Now, the problem is I go to the App Store, and it no longer shows me that I have an update to install.
I go to About Mac, and it shows I have Version "10.10.1 (14B25)" installed ?!?!
So I'm stuck in limbo with a half 10.10.1/2 install ?!
What's going on here? Is there any way I can download the official 10.10.2 update .dmg so that I can perform a manual reinstall? I tried the following URL
http://support.apple.com/kb/DL1786
However when clicking on Download button, it gives me an error "We're Sorry, we can't find the article you're looking for".
I wouldn't mind pasting the upgrade logs for reference but can't find them - or don't know where they'd be..
Thanks.

Thank you very much for your support.
And thank you all! This is my first post in Apple's forums and I'm very impressed
Just a quick update, I got it to work with the Combo Installer. I dug around and found out they changed the name of the file to OSXUpdCombo10.10.2.dmg
I just replaced the .dmg i was getting a 404 with OSXUpdCombo10.10.2.dmg and got a copy - though checking now, it seems they fixed the link.
I gave that an install and it fixed the issue; no errors. My About page now shows 10.10.2, and allis well!

Restored 10.6 OS from CD and fails to Boot after Combo upgrade

I have a clean install of Lion on my internal drive and an external clone of the HD from the previous Snow Leopard install. The Clone worked until I updated via the latest auto update. I have App's and other settings to transfer to Lion from this clone so want to get it working so I can ensure all the App's are upgraded to work on Lion or are deleted.
After the external drive failed to boot I reinstalled the system from my Snow Leopard Install CD, not the 24-inch iMac (Mid 2007) restore CD.
I then used Auto updater to install the combo and other updates to 10.6.8 this booted fine until I upgraded Safari 5.1 and Java - the last items that came up on the software updater. Upon restart, the boot failed in the last portion of the boot and at this point the Apple emblem went away and the round circle with diaginoal line apeared.
On starting with the option key down, the clone disk 10.6.8 shows as being available, along with the internal Drive, for booting.
Starting with "command + S" gets through to the last line of the process then states "waiting on Root"
When compaired to a Snow OS that boots OK it is the last line of code before the curser is ready for entering a command.
Can anyone tell me what to look for or how to repair this error so that I can get my data across to Lion. Thanks

Well, in case anyone else has a similar problem I managed to fix the system by the following process:
I reinstalled 10.6.0 from the retail Snow Leopard CD. The drive Booted OK but I needed to be upgraded to 10.6.8 to use the migration tool so I then upgraded using the Software Update utility. Boot failed again at this point and could not be fixed by anything I did.
I then reinstalled 10.6.0 from the CD to try again, but the HD would not boot this time around.
I downloaded CleanApp by Synium Software (http://www.syniumsoftware.com/cleanapp/) on a commendation from the famous eBook, "Take Control of installing Lion" by Joe Kissell of TidBits. I used this from my Lion HD to remove all orphan files, PPC files and Apps, and other junk. Snow Leapard still not Booting after repairs by various disk repair utilities including Apples.
I Booted from my internal HD using Lion and ran SuperDuper to make a new Clone of the failed HD on a second external HD. Took a day and a night to run while I was at work, but the new clone would not boot at this stage so I ran SuperDuper again using the "Smart Update Backup" option. This just adds changed files or missing files to the clone. At the end of this process I had a running Clone that would boot on 10.6.0.
I Booted from the second Clone and used the Software Update utility then to up grade in the two stages the Auto system used to bring my OS up to 10.6.8. This was successful and I had a Bootable Snow Leopard with no old Apps from which to Migrate my data.

My Imac fails when I try to upgrade from Snow Leopard 10.6.8. I have to boot up from disk. Does anyone know how to overcome this problem?

My iMac fails when I try to upgrade from Snow Leopard 10.6.8. I have to boot up from disk. Does anyone know how to overcome this problem?   I need to upgrade in order to install latest software.

It would be lovely to know what your talking about. Upgrading from Snow Leopard does not involve discs.
Upgrading to Lion
If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase a redemption code at the Online Apple Store: OS X Mountain Lion. Mountain Lion is $19.99 plus tax. Use the code to redeem a download of Mountain Lion from the App Store. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion - System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later.
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model
             Identifier 5,1 or later.
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later.
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later.
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later.
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later.
         7. Xserve (Early 2009) - Model Identifier 3,1 or later.
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
     Are my applications compatible?
         See App Compatibility Table - RoaringApps.
Upgrading to Yosemite
You can upgrade to Yosemite from Lion or directly from Snow Leopard. Yosemite can be downloaded from the Mac App Store for FREE.
Upgrading to Yosemite
To upgrade to Yosemite you must have Snow Leopard 10.6.8 or Lion installed. Download Yosemite from the App Store. Sign in using your Apple ID. Yosemite is free. The file is quite large, over 5 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
    OS X Mavericks/Yosemite- System Requirements
    Macs that can be upgraded to OS X Yosemite
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
     Are my applications compatible?
         See App Compatibility Table - RoaringApps.

Compaq Notebook CQ-45 137TX fails to boot

Hello,
I own a Compaq CQ-45 137TX (Intel Core 2 Duo P7350, 3 GB RAM, 320GB HDD, nVidia GeForce 9200M GS, Windows 7(upgraded from Vista)) with a broken LCD Screen. Since repairing the screen made no sense for such an old laptop, I started using it as a desktop by attaching an external monitor and input devices. The computer worked fine for the past few months.
Upon restarting the computer after a hiatus of a week or so, the computer failed to boot and display anything on the external monitor. I think it is failing POST.
The laptop gives out multiple beeps continually (not continuous, multiple beeps that don't end).
I thought that the RAM is faulty and tried to reboot the machine by trying one RAM stick at a time (since the laptop has two). It didn't work for either of the two sticks tried in both slots individually.
I think both the RAM sticks may be faulty, however, I am unable to borrow a RAM stick to test on it.
Before buying a new one, I would like someone to clarify or point out other hardware that may faulty in this laptop. I have had people tell me that my Graphic Card may have given up.
Thank you for your assistance.

Hello @root123 ,
Welcome to the HP Forums!
I understand you're unable to boot up your CQ-45 notebook.
It's unlikely to be RAM if neither card worked in either of the two DIMM slots. It is possible that both cards or slots have failed, but highly unlikely.
The beeping should tell you exactly what the error is. Try looking through this document which should help you identify the error: Computer Does Not Start and the LEDs Blink or the Computer Beeps.
You may also want to try this document as well: Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot.
Let me know if you're able to identify the failure with the beep code and we'll go from there.
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

Imac fails to boot - at all

Hi,
I restored my imac using original disks and then updated the osx to current over the web. all fine so far. then restored the system (full disk image) from time machine to recover my data. restore said it worked ok but when the machine restarted it failed to boot and i just get a list of script top left of screen saying launch faild, debugger called etc. Then gray screen and grey box in middle of screen saying you need to restart the computer. This i have done numerous times but it just does the same thing again and again. More worrying is that the machine will not boot from original disks either. Any ideas before I take it to the apple store?
Thanks, Pedro

If the disk image or time machine backup was from a older version of OS X then what was currently installed restoring that image/TM backup may have corrupted the newer version of OS X.
I suggest you start over by wiping the drive completely, then Restore your Mac from that TM/Image backup and Then Upgrade to Mavericks.
You have the steps slightly backwards. The latest thing you should do is upgrade the OS to the newest version.

OS X completely fails to boot

Hi there.
I've really screwed up my MacBook Pro. Post installing Quicktime 7.1.1 as part of a software update, I found that I wished, albeit temporarily, to revert to 7.02. Obviously, I wasn't going to be allowed to install that, so I figured I'd just use Pacifist to force an install, as I've done in the past for other software that refused to install for whatever reason (never Apple software though...could be the problem).
So, did that. Attempt to open Quicktime. Bounce, bounce, icon disappears. Hmm. Attempt to open System Preferences. Bounce, bounce, nothing. Oh dear.
I then downloaded the .dmg for QT 7.1.1, but it just refused to mount, so I then shut down the computer and restarted. OS X now completely refuses to boot, it gets as far as very slowly filling the blue bar at the OS loading screen, but then does nothing.
I've so far attempted to boot into safe mode by holding Shift as I boot up, but that just results in the MacBook reminaing on the spinning icon and the grey Apple logo till I release the key (after a good few minutes), and then it just tries and fails to boot OS X again normally.
I've also put my OS X install/recovery disc in the drive and booted from that, repairing the disk (it found no problems...awesome) and disk permissions (I'll admit I never thought that that would do anything anyway). Both failed to help, obviously.
Any ideas what I could do? I'll be gutted if I have to wipe my HDD and reinstall OSX; I'm guttered there's no rollback/restore feature on Macs, something I always found useful in these situations back when I used Windows.
Any replies are greatly appreciated.
Joe

You can re-install without losing most of your settings and without losing documents / files (unless something goes severely wrong).
Archive and Install will allow you to re-install while saving all your documents and files.
You can read about this technique here:
http://docs.info.apple.com/article.html?artnum=107120
Once you have re-installed, you can then upgrade your OS to 10.4.6 and QuickTime to 7.1.1
You really are not going to want to run a version of QuickTime prior to 7.1.1 on your system. Read the following documents for more information:
http://docs.info.apple.com/article.html?artnum=303176
http://docs.info.apple.com/article.html?artnum=303787
The Archive and install is probably your best option at this point.
Hope this helps.

Satellite L300-03C - BIOS Update to V2.2 then Fail to boot on XP

L300-03C BIOS Update to V2.2 then Fail to boot on XP
Model:PSLB8C-03C01X
Please help
My OS is WinXP SP3 , BIOS was v1.4
using the latest BIOS V2.2 windows file to upgrade(from v1.4)
The progress is normally finished , however it fail to boot up.
I still can enter BIOS Setup , but can not run Windows XP to login screen.
So , what I can do?
Thank you

Hello
Did you load the default settings in BIOS after update?
So press F9 key in BIOS setup and save the settings.
Does it work?

Upgrade to linux3.1.4 causes no boot(Solved?)

While troubleshooting the failures of my raid0 bootable Compact Flash devices, I proceeded to perform the following setup.
I first upgraded my system in the raid0 kernel 2.6.39.3-1 with a download via pacman -Syu. Total packages downloaded was 317. Linux kernel 3.1.4 was not accepted for download. All packages were successfully downloaded and installed( rm/etc/profile.d/xxxx.sh was removed). The device was recognized in /etc/proc/mdstat as /dev/md0.
Therefore all items concerned with the latest packages were installed. This without the new kernel 3.1.4. I upgraded mirrorlist which was included in the packages. I then rebooted into my raid0 system successfully. I then upgraded to linux 3.1.4 kernel with pacman.
I then rebooted but failed to boot with the error : unable to find /dev/md0...no major-minor number on device by uuidxxxxxxxxxxxxxxxx.
Thus, it seems obvious there is a problem in the linux-3.1.4-1-x86_64.pkg .tar.xz which affects the blkid, using UUID, since previous failures encountered with this kernel indicate that the uuid changed in linux kernels to accept the uuid of the booting device in this case, the boot device is the first device (0) of the two devices(0,1). There are also indications that the /dev/md0 becomes dev md127.
Any guidance to the solution of this discrepancy would be welcomed.
Last edited by lilsirecho (2011-11-16 15:34:12)

The problem occurs with many users.
My postings in the following arch post may give you a solution. My views are expressed therein and may not be valid(however, I have had messed up downloads with bad mirrors, despite what has been reported in that post)
Anyhow, there have been successful uses of my approach, even though it may seem off base.
I did the complete list of steps to correct my system. It is possible the mirror download did not include initramfs. My approach was to " cover the bases" in proper pacman order not having left out pertinent possibilities and has helped others to correct their problem.
I suggest you read the whole post , decide what might be useable including the recommend from falconindy. He can well be right but why does it hit more than one user?
Good luck and let us know how it goes...............
EDIT: The same problem occurred when I upgraded to the latest Kernel. I performed the same procedure I recommended and now have the latest kernel in 3 pairs of CF raid0 cards. They run faster than normal by 50% in hdparm -t. I attribute this to the raid0 mode striping.
It is not apparent to me what order of install or what speed of performance is applicable to pacman when downloading the core items in archlinux. Perhaps a delay(ugh) is needed for initramfs to properly install.
All of pacman is a black art but most definitely needs to be run according to hoyle but system changes such as initramfs need to be compatible with pacman if that is the problem with upgrades(as suggested by falconindy) .
I expect the next kernel upgrade to cause the same failure based on past experience with linux kernels.
Last edited by lilsirecho (2011-11-17 22:08:32)

Boot camp often fails to boot - fix?

Boot Camp often fails to boot at all, leaving the iMac dead at the bootloader screen. Have to force shutdown by holding down power button. Full hardware test declared the hardware 100% functional. Disk Utility and chkdsk sees nothing but fire. This is intermitent/random and it proved impossible to "force" it's occurance. It happen when it darn well please?
First occurance goes back to late July 2011, a few days after a major thunder storm that caused pulsing power blackouts (as in, very short bursts - like turning off the power then immediately flipping it back on - too quick to actually shut the computer down). Surely, this must be the source of the issue? Right? Alas it doesn't adds up. Power supply of this house is very stable and reliable. Power fluctuations are unhearded of. It's also connected to a surge protected outlet. The system itself, in Mac or Win, is flat out stable. It does not freeze out of the blue like what a damaged power supply would cause. It only ever freeze upon choosing a partition via the boot camp interface.
Further observation as compared to normal boot procedure: Upon selection of the Windows partition, the LED on the USB mouse turns off then back on again a short moment later. Windows loads up normally. When the crash occurs, the LED never turn back on. It's just dead right there and then.
What's going on and what can I do to fix this? It feels like some hardware initialisation fails for some reasons. It's ough to be around the USB systems itself but what do I know anyway?
P.S.: Please, don't mention the dreaded format and re-install. It's a 20 hours job. I'm not going there. ty
Message was edited by: Virgule - changed a "foul" word

Why not upgrade the surge protector to a UPS? good units are very affordable.
Put all your sensitive equipment like modem/router, computer, electronics running off UPS.
CyberPower SINE 1000VA/600W $137
http://www.amazon.com/CyberPower-CP1000PFCLCD-1000VA-600W-Compatible/dp/B00429N1 92/
Well, sometimes if you don't have backups, and refuse to do what you may need to....
There are troubleshoolting tips and faqs I'm sure on the 'net.
Starting with Windows 7 DVD for one
Even OS X won't survive with forced (hard) shutdowns.
If it only happens in Windows, and you were running OS X when the outage occurred...
USB devices and cables can be hard to ID but swapping cables and stuff helps.
As for Disk Utility, it does not look at drive sectors or files for issues.
If you really want to scan a hard drive, use the vendor's own Linux or Windows utiilty to recertify the sectors.
If you haven't done any deep cleaning of files, registry, even uninstall and reinstall components.
I just did a reinstall. Partially to be a test run for when I have to install Windows 8 next week, also to clear up a problem I had, possibly a rogue web site using a rootkit to hide files and icons and programs disappeared and icons became generic. So yes I don't take it lightly, but the new install runs much much better (over two years since last install).
AHT is not a 100% reliable at finding everything, only what it actually is designed or suppose to look for.
A semi-loose DIMM or faulty can be enough, and not likely AHT or Memtest will find it, but Windows does tend to spot a problem with RAM during installs.
CCleaner 3.x
Driver Sweeper 3.x
START: run %TEMP% - Select All and send to Recycle
Lion Recovery - show all hidden partitions and check health of all, hidden debug menu in Disk Utility can be enabled in command line
Some partitions (GPT, EFI, System, Volume Information Block) are only tested during format where each sector does get a thorough check for errors because they can't be mapped out later. When you do chkdsk etc you only test user partition areas and not the 'entire' drive, unless doing a full initialization. And GPT requires that the VIB and also the backup VIB both be error free - in the past the backup VIB if it failed was "optional" though, it is not now.
If you clone OS X then it is easy to move it to another drive and also to do full initialization and restore. If 3 days of your time isn't an option maybe time to invest in program(s) and methods that can backup and restore.
Trying to find the needle in haystack that you have limped along with I guess since July (since installing Lion? maybe ?) can take 3 days probably, unless you are lucky enough to replace a mouse or cable on first step and it all goes away (hit the lottery or get hit by lightning odds)

X200 fails to boot up with blank screen

Hi guys, i came to the problem this morning. when i was trying to start up the computer, it failed to boot up. the machine was normally shut down last time. with no beep, the screen remains blank and black, without any change. after 2 seconds of pressing the powerkey, it is shut down with a short beep. here are what i tried:
1, use an external drive and a windows 7 disk. no reaction.
2,Remove AC and System battery. Press and hold the power button several times (3-5 time) for a count of 5 secondsReconnect AC and press the power button - if system starts normally, shut down and insert the battery. does not work.
by the way, the mahine was bought in Hongkong and still is in warranty. however, i am currently in Germany, and will stay for another 3 months.
anyone with any suggestions? thanks.
Solved!
Go to Solution.

got it fixed by clearing CMOS, wow
according to: http://forum.lenovo.com/t5/X-Series-ThinkPad-Laptops/Blank-screen-after-Bios-Upgrade-on-X200/ta-p/29...

Upgrade to 10.4.6 - fail to boot - cannot see disk anymore

Similar Messages

Maybe you are looking for